What Dave said. Thats what I did and attached with rare earth magnets and a thin gasket as I didn't want to drill holes to mount to my PM 60 8" jointer nor scratch the paint. I use 5" ducting to it and works great, been running that way for about 5 years now, no backup of material at all. Have 1.75 hp blower with 5" ducting to all machines. Randy